Improvement in leather-splitting machines



anni gaat @strut-famine.

Lette-rs Patent No. 98,068, dated December 21, 1869.

IMPROVEMENT IN LIE?ATHER-SIPLI'J.TINl MACHCINES.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it may concern: A

Be it known that I, CHARLES KnNrs'roN, of Somerville, in the county of Middlesex, and State of Massachusetts, haveinvented an lmproved Leather-Splitting Machine; and l do hereby declare the following, taken in connection with the drawings which accompany and form'part of this specitication, is a description of my invention, sufficient to enable those skilled in the art to practise it.

My invention relates to an arrangement or, organization of mechanism for splitting leather. f

In ordinary leather-splitting, (asis well known to persons skilled in the manuiacturehof boot and shoestock, and other leather stock,) the feed-rolls push the leather straight forward against a stationary splittingknife edge, (the knife having no movement, and the rolls only rotating,) and, with many thin skins, it is impossible to split accurately with such machines, however sharp may be the cutting-edge.

To remedy this diticnlty, machines have been, to a limited extent, made, in which the knife reciprocated, thereby imparting to its cutting-edge a drawing stroke.

Now, although such movement of 'the lknife causes the leather to be cnt more readily, itprevents the employment of a knife which is make rigid and unbending, by reason of its iirni attachment to a solid.

leather as they present it to the cutting-edge of the knife.

The drawings represent a. machine embodying the improvement.

A shows the machine in plan.

B is a vertical cross-section of it.

a a denote the standards, supporting a bed-piece, b, to the top of which is bolted the knife-cutter c, Whose cutting-edge (l projects between the feed-rolls e j, as seen at B, the cutter having suitable provision for adjustment of its. edge toward or from the rolls.

The journals g of the lower feed-roll turn in sliding bearings h, forced upward by strong springs t', and the 'journals k of the upper roll turn in vertically-sliding bearingsx, drawn upward by springs l, the extent of upward movement of the bearings k heilig adjustably determined by stop-screws m, or other suitable .devices.

'- The journals g extend vbeyond their bearings h, and the roll is made lshorter than the bed, so that the roll can be moved to and fro .(in the line of its axis) between the standards.

At the end of one of the journals g, a cam-wheel, n,

is Xed, this wheel having a zigzag cam-groove, o, into ing', simple in construction, and effective in operation,

and the provision for reciprocation of the rolls adds but very little tothe cost of the machine over the cost of those inv ordinary use, while the improvementnot only enables the splitting to be much more easily eiected,

but causes the leather to be more accurately and evenly` split than in other machines.

claim, a leather-splitting machine, having a stationary knife or cutter, and reciprocating feed-rolls, operating substantially as described. I

' CHARLES KENISTON. Witnesses FRANCIS GoULD, J. B. CROSBY. f 

